Tribological Properties of MoS2 with Different Morphologies in High-Density Polyethylene

被引：46
作者：
Hu, Kun Hong [1 ,2 ]
Hu, Xian Guo [2 ]
Wang, Jin [3 ]
Xu, Yu Fu [2 ]
Han, Cheng Liang [1 ]
机构：
[1] Hefei Univ, Dept Chem & Mat Engn, Hefei 230022, Peoples R China
[2] Hefei Univ Technol, Inst Tribol, Hefei 230009, Peoples R China
[3] Hefei Univ Technol, Sch Chem Engn, Hefei 230009, Peoples R China
来源：
TRIBOLOGY LETTERS | 2012年 / 47卷 / 01期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Molybdenum disulfide; Polymers (solid); Solid lubricant additives; Vegetable oils; ULTRA-LOW FRICTION; NANOPARTICLES; LUBRICATION;
D O I：
10.1007/s11249-012-9964-1
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The tribological properties of high-density polyethylene (HDPE) modified by MoS2 with different morphologies (nano-spheres, nano-platelets, and micro-platelets) were investigated using an end-face tribometer under dry friction and rapeseed oil lubrication. Under dry friction, MoS2 nano-platelets and nano-spheres exhibited their best properties at 1.0 and 1.5 % (wt%) MoS2 content, respectively. Under oil lubrication, the nano-spheres were better additives in HDPE than the other two. The melting of HDPE was the main wear mechanism under dry friction, whereas abrasive is the main wear mechanism under oil lubrication. The changing wear mechanisms led to anti-wear variations in HDPEs with increasing MoS2 contents. The tribological properties were closely related to the crystallinity and thermo-mechanical properties of MoS2/HDPE. The samples with lower damping factors and better crystallinity showed better tribological properties. The excellent anti-wear properties of nano-spheres can be attributed to the deformation and exfoliation of nano-spheres in the friction process. Nano-platelets and nano-spheres in HDPE are advantageous under dry friction and oil lubrication, respectively. This study better elucidated the relationship between the property and morphology of MoS2 in a polymer.
引用
收藏
页码：79 / 90
页数：12
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